Improved driving-belt and band of rubber and metal



' 71 Tenia z' m l /I2 IIE.:

1HE MORRIS PETERS Ca, WASHINGTON. n.

waited, Stairs @will @with LOUIS STERNE, 0F LONDON. ENGLAND.

Letters Patent No. 93,364, dated -A'ugnst 3, 1869;.jmtntcll 'in England, June 2, 1868.

:MPRovEn DRIvIceBEnT AND BAND or RUBBER AND METAL The Schedule referred to in these Letters Patent and making part of the same.

To alljt'hom. it 'may concern:

Be it known that I, Louis STERNE, a citizen ofthe United States, now residing in Loudon, county of Middlesex, England, have invented a new and useful Improvement in the Manufacture of Driving- Belts, Bands, or Straps, of which the following is a i'ull, clear, and exact description, reference being had to the accompanying drawing, forming part of this specification, and in whchf Figure 1 represents a longitudinal -vicw of a .drum having a belt, in the early course 4or preparatory process ot' its manufacture,- according to my improvement, wound upon it;

Figure 2, a similar view cfthe same, under encloe.

ure ot' a cylinder made in sections, for calrying out a subsequent process' in the manufacture of 'the belt;

and

Figures 3, 4, and 5, transverse sectionsof a belt, band, or strap, made in accordance with my improvement, under diiierent modifications or forms of construction. .l

Similar letters of reference .indicate corresponding y parts.

My invention consists iu manufacturing drivingbelts, bands, or straps from India rubber and metal,

in strips, united or joined together during the process of vulcanization or curing. I

In this way I produce a driving-belt, band, or strap, possessing great strength, durability and eeiency, formed in part of a metal strip or stn'ps, and in part ota strip or strips Aof rubber, united without the aid of any extraneous fastenings,

The following will serve to illustrate how this is or maybe done:

supposing, for instance, it be desired to make a belt with metal on one side only, 'I wind` a strip or length 'ofrubber prepared 'for curing or vulcanizing, and athin -strip of metal together upon a drum or cylinder,

vas shown in iig. 1, in which ais the drum, b, the rubber, wound spiially thereon, and faced by a strip of metal, which, being under the rubber, is not seen in this figure.

' When a sufficient length of these combined rubber and metal strips has been wound on the drum, I enclose tbe whole within or by two half cylinders, c c,- clamped by nuts d d.; I then submit the band, thus supported and enclosed, to ,the process of vulcanization or curing, whereby the metal and rubber are. firmly united.

I do-uot, however, limit myself to winding the strips upon a drum in order to subject them to the curingp'rocess, as they may be placed and pressed ina mould,

or placed on and-pressed or supported by an expanding-drum, or be otherwise held under pressure during the curing. It' the metal and rubber strips have been previously chemically prepared, they are united chemically.

Wheat-he metal strips are vcomposed of steel or iron, their sinfiieesfshould tirst'be ground or scoured perfectly free from scale or oxidized matter, and then be placed in a bath prepared to deposit the necessary precipitation of copper and zinc by the electro-metallurgical process, after which they may be put into sawdust to dry, and then' be placed onthe rubber and treated as hereinbefore described,

Belts of this description or character may either be made with a vmetal strip, e, on only one side of the rubber b, as represented in tig. 3, or with metal strips on both sides, as in g. 4, or be formed of a strip ot metal, c, interposed between two vstrips of rubber, b b, as shown in ge.

It is preferred-that the edges of the metal strip or strips should be embedded in the rubber, as represented in the drawing. f

Outside of Ithe belt, band or strap, made of rubber and metal combined, as described, may bea layer or layers of rubber and canvas, or other suitable material or materials. Such belts or bands may be of any de.

sired fonn in their transverse section. Thus, they may be round, consisting of a central steel wire, with a cov-r eringof rubber united with the wire during vulcaniza# tion, and sun'ounded byfan4 outer wrapper of rubbe'r and canvas.

What is here claimed, and desired to be secured by Letters Patent, is-

A driving-belt, band, or strap, made of India-rubber and metal strips, united or joined together durig the' process of .vulcanization, substantially as speciiicd.'

LOUIS STEP-NE.

Witnesses:

'W2 '1), WOOD. 

